| Natchitoches to Karlovo | 5,966.87 mi (9,602.75 km) |
| Natchitoches to Karnobat | 6,049.74 mi (9,736.12 km) |
| Natchitoches to Kavarna | 6,061.93 mi (9,755.73 km) |
| Natchitoches to Kazanlak | 5,990.73 mi (9,641.14 km) |
| Natchitoches to Knezha | 5,900.52 mi (9,495.97 km) |
| Natchitoches to Kostinbrod | 5,897.81 mi (9,491.61 km) |
| Natchitoches to Kozloduy | 5,874.50 mi (9,454.09 km) |
| Natchitoches to Kyustendil | 5,900.66 mi (9,496.20 km) |
| Natchitoches to Levski | 5,946.34 mi (9,569.70 km) |
| Natchitoches to Lom | 5,853.73 mi (9,420.67 km) |
| Natchitoches to Lovech | 5,941.13 mi (9,561.33 km) |
| Natchitoches to Lukovit | 5,917.20 mi (9,522.82 km) |
| Natchitoches to Lyaskovets | 5,980.54 mi (9,624.75 km) |
| Natchitoches to Mezdra | 5,901.58 mi (9,497.67 km) |
| Natchitoches to Momchilgrad | 6,041.01 mi (9,722.07 km) |
